This document provides an overview of service information (SI) in digital video broadcasting (DVB) systems, including sections like the network information section (NIT), service description section (SDT), bouquet association section (BAT), program association section (PAT), conditional access section (CAT), transport stream description section (TSDT), event information section (EIT), and running status section (RST). It includes syntax diagrams and details for each section, such as table IDs, section lengths, descriptors, and other fields. It also provides the PID and refresh interval requirements for each table type.

1. MPEG-2 Transport Stream Service Information (SI) in DVB Systems
ISO/IEC 13818-1 International Standard ETSI EN 300 468 International Standard
Discontinuity Information Section
ISO/IEC 13818-1 transport packet P E S PACKET SYNTAX DIAGRAM (DI T)
24 bits 8 bits 16 bits
Syntax No. of bits Network Information section (NIT) Service description section (SDT) Bouquet association section (BAT)
Packet PES Optional
Syntax No. of bits
transport_packet ( ) { Stream Syntax No. of bits Syntax No. of bits
Start Code Packet PES PES Packet Data Bytes Syntax No. of bits discontinuity_information_section ( ) {
sync_byte 8 Id
Prefix Length HEADER network_information_section( ){ service_description_section( ){ bouquet_association_section(){ table_id 8
transport_error_indica tor 1 table_id 8 table_id 8 table_id 8
section_syntax_indicator 1 section_syntax_indicator 1
payload_unit_start_indica tor 1 section_syntax_indicator 1 section_syntax_indicator 1
reserved_future_use 1 reserved_future_use 1 reserved_future_use 1 reserved_future_use 1
transport_priority 1 reserved 2
2 bits 2 bits 1 bit 1 bit 1 bit 1 bit 8 bits 8 bits m * 8 bits reserved 2 reserved 2 reserved 2
PID 13 section_length 12 section_length 12 section_length 12
PES Data Stuffing bouquet_id 16 section_length 12
transport_scrambling_control 2 PES Original PES network_id 16 transport_stream_id 16
Optional reserved 2 transition_flag 1
ada pta tion_field_control 2 ‘10’ Scrambling Alignment Copyright 7 Flags Header Bytes reserved 2 reserved 2
Priority or Copy Fields version_number 5 reserved_future_use 7
continuity_counter 4 Control Indicator Data Length (0xFF) version_number 5 version_number 5
current_next_indicator 1 current_next_indicator 1
current_next_indicator 1
section_number 8 }
if(adaptation_field_control==’10’ || adaptation_field_control==’11’ ) { section_number 8 section_number 8
adaptation_field ( ) last_section_number 8 last_section number 8
last_section number 8 reserved_future_use 4
33 bits reserved_future_use 4 original_network_id 16
} 33 bits 42 bits 22 bits 8 bits 7 bits 16 bits bouquet_descriptors_length 12
network_descriptors_length 12 reserved_future_use 8 for(i=0;i<N;i++){
if(adaptation_field_control==’01’ || adaptation_field_control==’11’ ) { for(i=0;i<N;i++){ for(i=0;i<N;i++) {
DSM Previous descriptor( )
for ( i=0;i<N;i++) { PTS
ESCR
ES
Trick
Additional
PES
PES descriptor() service_id 16 }
Selection Information Section (SI T)
da ta_byte 8 DTS Rate Copy Info Extension } reserved_future_use 6
Mode CRC reserved_future_use 4 Syntax No. of bits
} reserved_future_use 4 EIT_schedule_flag 1 transport_stream_loop_length 12
transport_stream_loop_length 12 EIT_present_following_flag 1 for(i=0;i<N;i++){
} running_status 3 selection_information_section ( ) {
for(i=0;i<N;i++){ transport_stream_id 16
} transport_stream_id 16 free_CA_mode 1 original_network_id 16
table_id 8
original_network_id 16 descriptors_loop_length 12 reserved_future_use 4 section_syntax_indicator 1
reserved_future_use 4 for(j=0;j<N;j++){ transport_descriptors_length 12 DVB_reserved_future_use 1
Optional transport_descriptors_length 12 descriptor( ) for(j=0;j<N;j++) {
5ESCR
Flags } ISO_reserved 2
Fields for(j=0;j<N;j++){ descriptor ( )
TRANSPORT STREAM SYNTAX DIAGRAM }
descriptor() }
CRC_32 32 }
} section_length
DVB_reserved_future_use
12
16
188 bytes } } CRC_32 32 ISO_reserved 2
Transport 128 bits 8 bits 8 bits 16 bits 7 bits
CRC_32 32 }
version_number 5
Header Header Payload }
Packet Payload Payload Header
PES Packet PES PES current_next_indicator 1
Program Packet P-STD Photo courtesy of NASA/JPL/Caltech
Stream Private Header Extension Extension section_number 8
Sequence Counter Buffer
Data Field Field Length Field Data last_section_number 8
8 bits 1 bit 1 bit 1 bit 13 bits 2 bits 2 bits 4 bits DVB_reserved_for_future_use 4
transmission_info_loop_length 12
Sync Transport Payload Transport Adaptation for(i=0;i<N;i++) {
Transport Continuity Adaptation
Byte Error Unit Start PID Scrambling Field
Priority Counter Field descriptor ( )
Indicator Indicator Control Control
}
Program association section (PAT) Event Information Section (EIT) for(i=0;i<N;i++) {
8 bits 1 bit 1 bit 1 bit 5 bits
Syntax
program_association_section( ) {
No. of bits
MPEG-2 DVB DVB Syntax
event_information_section( ) {
No. of bits service_id
DVB_reserved_future_use
16
1
table_id 8 (Defined) (Mandatory) (Optional) table_id 8 running_status 3
Adaptation Random Elementary section_syntax_indicator 1 section_syntax_indicator 1
Discontinuity Optional Stuffing service_loop_length 12
Field Access Stream Priority 5 Flags ‘0’ 1 PID=0x0000 PID=0x0010 PID=0x0010 reserved_future_use 1
Indicator Fields Bytes for(j=0;j<N;j++) {
Length Indicator Indicator reserved 2 reserved 2
section_length 12 section_length 12 descriptor ( )
transport_stream_id 16 Network service_id 16 }
reserved
version_number
2
5
PAT NIT NIT Information
reserved
version_number
2
5
}
CRC_32 32
42 bits 42 bits 8 bits 8 bits 8 bits 3 bits
current_next_indicator 1 Actual transport Other transport current_next_indicator 1
stream section_number 8 }
Transport Transport Adaptation section_number 8 stream
Splice Optional last_section_number 8 last_section_number 8
PCR OPCR Private Data Private Field Extenstion 3 Flags transport_stream_id 16
Countdown Fields Conditional access section (CAT) for (j=0;j< N;j++) { PID=0x0011
Length Data Length original_network_id 16
program_number 16 segment_last_section_number 8
Syntax No. of bits reserved 3 last_table_id 8 ETSI TR 101 290 -Table Timing Intervals
CA_section( ) { if (program_number==’0’ ) { Bouquet for(i=0;i<N;i++) {
1 bit 15 bits 2 bits 22 bits 4 bits 33 bits table_id
section_syntax_indicator
8
1
}
network_PID 13
BAT Association event_id
start_time
16
40
Table Type PID Max/Min
Itw_valid Itw Piecewise Splice else { duration 24 PAT 0x 00 500 ms
DTS_next_au ‘0’ 1 program_map_PID 13
Flag Offset Rate Type reserved 2
running_status 3 TSDT 0x 02 10000 ms [1]
} free_CA_mode 1 NIT actual 0x10 10000 / 25 ms
section_length 12 }
reserved 18 PID=0x0011 PID=0x0011 descriptors_loop_length 12 NIT other 0x10 10000 / 25 ms
CRC_32 32 for (j=0;j<N;j++) {
version_number 5 } descriptor ( ) SDT actual 0x11 2000 / 25 ms
current_next_indicator 1 } SDT other 0x11 10000 / 25 ms
PID=0x0001 Service } BAT 0x11 10000 / 25 ms
PROGRAM ASSOCIATION SECTION DIAGRAM
section_number
last_section number
8
8 SDT SDT Description }
CRC_32 32 EIT actual present-following
EIT other present-following
0x12
0x12
2000 / 25 ms [2]
10000 / 25 ms [2]
32
for (i=0;i< N;i++) { Actual transport Other transport
1 2 2
descriptor( ) TOT 0x14 30000 / 25 ms
8 bits 1 bit bit bits 12 bits 16 bits bits 5 bits 1 bit 8 bits 8 bits bits stream stream
TDT 0x14 30000 / 25 ms
Table ID
Section
Syntax ‘0’
Section
Transport
Stream Version
Current
Next
Section
Last
Section N CRC
}
CRC_32 32 CAT PID=0x0012 PID=0x0012 PID=0x0012 PMT ALL 500 ms
Length Number Number Loop 32 } [1] ETSI TR 101 211, TSDT interval defined in section 4.1.9
Indicator ID Indicator Number
Running status section (RST) [2] ETSI TR 101 211, Additional EIT Actual/Other Schedule intervals
EIT EIT EIT Event Syntax No. of bits
defined for:
-DVB Satellite/Cable in section 4.4.1
16 bits
3
bits 13 bits 16 bits
3
bits 13 bits PID=0x0002
Actual transport
stream
Actual transport
stream
Other transport
stream
Information running_status_section ( ) { -DVB Terrestrial in section 4.4.2
table_id 8
Program present/following schedule present/following section_syntax_indicator 1
Program Program reserved_future_use 1
Number
Network ... Number Map ... Transport Stream Description Section schedule reserved 2
PID i PID_i (TSDT) section_length 12
0
Syntax No. of bits TSDT PID=0x0013 for(i=0;i<N;i++){
transport_stream_id 16
Stream Type Assignments
original_network_id 16 Value Description
TS_Description_section( ) { service_id 16 Abbreviations
Running event_id 16 0x00 ITU-T | ISO/IEC reserved
CONDITIONAL ACCESS SECTION DIAGRAM
table_id
section_syntax_indicator
8
1 RST Status
reserved_future_use
running_status
5
3 0x01 ISO/IEC 11172-2 Video AC-3 Dolby AC-3 audio coding
‘0’ 1 } 0x02 ITU-T Rec. H.262 | ISO/IEC 13818-2 Video or ISO/IEC (ITU-R Recommendation BS1196 [19])
1 2 32 reserved 2 Transport Stream program map section (PMT) }
BAT Bouquet Association Table
8 bits 1 bit bit bits 12 bits 18 bits 5 bits 1 bit 8 bits 8 bits bits 11172-2 constrained parameter video stream
section_length 12 Syntax No. of bits BCD Binary Coded Decimal
Section Current Last N reserved 18 PID=0x0014 PID=0x0014 0x03 ISO/IEC 11172-3 Audio
Syntax Section Version Section CRC TS_program_map_section( ) { PID=0x10 to 0x1FFE bslbf bit string, left bit first
Table ID ‘0’ Next Section Loop version_number 5 0x04 ISO/IEC 13818-3 Audio
Indicator Length Number
Indicator
Number
Number Descriptors 32 table_id 8 Time offset section (TOT) CA Conditional Access
current_next_indicator 1 0x05 ITU-T Rec. H.222.0 | ISO/IEC 13818-1 private_sections
section_number 8 section_syntax_indicator 1 Syntax No. of bits CAT Conditional Access Table
Time ITU-T Rec. H.222.0 | ISO/IEC 13818-1 PES packets
last_section number
for (i=0;i< N;i++) {
8 ‘0’
reserved
1
2
PMT TDT TOT Offset
time_offset_section ( ) {
table_id 8
0x06
containing private data
CLUT
CRC
Color Look-Up Table
Cyclic Redundancy Check
section_length 12 Time & Date section_syntax_indicator 1 0x07 ISO/IEC 13522 MHEG DAB Digital Audio Broadcasting
descriptor( ) program_number 16
} reserved_future_use 1 DIT Discontinuity Information Table
reserved 2 0x08 Annex A - DSM CC
TS PROGRAM MAP SECTION DIAGRAM CRC_32 32 version_number 5 PID=0x0010 to 0x0014
reserved
section_length
2
12 0x09 ITU-T Rec. H.222.1 DVB Digital Video Broadcasting
1 2 2 3 4 } current_next_indicator 1 UTC_time 40 DVD Digital Versatile Disc
8 bits 1 bit bit bits 12 bits 16 bits bits 5 bits 1 bit 8 bits 8 bits bits 13 bits bits 0x0A ISO/IEC 13818-6 type A
section_number 8 reserved 4 EBU European Broadcasting Union
Section Current Last last_section number 8 descriptors_loop_length 12 0x0B ISO/IEC 13818-6 type B EIT Event Information Table
Section Program Version Section PCR reserved 3 for(i=0;i<N;i++){ ISO/IEC 13818-6 type C
Table ID Syntax
Indicator
‘0’
Length Number Number
Next
Indicator
Number
Section
Number
PID PCR_PID
reserved
13
4
ST Stuffing
}
descriptor ( ) 0x0C
0x0D ISO/IEC 13818-6 type D
EMM
EPG
Entitlement Management Message
Electronic ProgramGuide
CRC_32 32 ISO/IEC 13818-1 auxiliary ETS European Telecommunication Standard
program_info_length 12 } 0x0E
for (i=0;i< N;i++) { 0x0F - 0x7F ITU-T Rec. H.222.0 | ISO/IEC 13818-1 reserved FEC Forward Error Correction
12 bits 32 bits
descriptor( ) IEC International Electrotechnical Commission
Program N } 0x80 - 0xFF User private
N IRD Integrated Receiver Decoder
Info Loop CRC_32 for (i=0;i<N1;i++) { ISO International Organization for Standardization
Loop stream_type 8
Length Descriptors LSB Least Significant Bit
Private Section reserved 3
elementary_PID 13 MJD Modified Julian Date
3 4 Syntax No. of bits reserved 4
Allocation of table_id Values MPEG Moving Pictures Expert Group
8 bits bits 13 bits bits 12 bits
ES_info_length 12 NIT Network Information Table
ES N private_section ( ) { for (j=0;j<N2;j++) { Value Description
Stream Elementary NVOD Near Video On Demand
Info Loop table_id 8 descriptor( ) PAT Program Association Table
Type PID 0x00 program_association_section
Length Descriptors section_syntax_indicator 1 } PDC ProgramDelivery Control
} 0x01 conditional_access_section
private_indicator 1 0x02 program_map_section PID Packet IDentifier
CRC_32 32
reserved 2 } 0x03 transport_stream_description_section PMT Program Map Table
private_section_length 12 0x04 to 0x3F reserved PSI Program Specific Information
if(section_syntax_indicator== ‘0’) { 0x40 network_information_section - actual_network PSTN Public Switched Telephone Network
Stuffing section (ST) QAM Quadrature Amplitude Modulation
PRIVATE SECTION DIAGRAM for(i=0; i<N; i++) { Time and date section (TDT) 0x41 network_information_section - other_network
QPSK Quaternary Phase Shift Keying
2 private_data_byte 8 Syntax No. of bits Syntax No. of bits 0x42 service_description_section - actual_transport_stream
8 bits 1 bit 1 bit bits 12 bits 0x43 to 0x45 reserved for future use rpchof remainder polynomial coefficients, highest order first
} time_date_section ( ){ stuffing_section ( ) { PID Allocation for DVB SI
Section Private table_id 8 0x46 service_description_section - other_transport_stream RS Reed-Solomon
Table Private } table_id 8
Syntax Section section_syntax_indicator 1 Table PID Value 0x47 to 0x49 reserved for future use RST Running Status Table
Id Indicator else { section_syntax_indicator 1 reserved_future_use 1
Indicator Length reserved_future_use 1 0x4A bouquet_association_section SeF Scale Factor
table_id_extension 16 reserved 2 PAT 0x0000
reserved 2 section_length 12 0x4B to 0x4D reserved for future use SDT Service Description Table
reserved 2 section_length 12 for(i=0;i<N;i++){ CAT 0x0001 SI Service Information
0x0002 0x4E event_information_section - actual_transport_stream, present/following
version_number 5 UTC_time 40 data_byte 8 TSDT SIT Selection Information Table
} } reserved 0x0003 to 0x000F 0x4F event_information_section - other_transport_stream, present/following
current_next_indicator 1 } event_information_section - actual_transport_stream, schedule SMI Storage Media Interoperability
NIT,ST 0x0010 0x50 to 0x5F
N Private Data Bytes section_number 8 event_information_section - other_transport_stream, schedule ST Stuffing Table
SDT, BAT, ST 0x0011 0x60 to 0x6F
last_section_number 8 TDT Time and Date Table
EIT, ST 0x0012 0x70 time_date_section
for(i=0;i<private_section_length-9;i++) { TOT Time Offset Table
RST, ST 0x0013 0x71 running_status_section
private_data_byte 8 TPS Transmission Parameter Signaling
2 TDT, TOT, ST 0x0014 0x72 stuffing_section
16 bits bits 5 bits 1 bit 8 bits 8 bits 32 bits TS Transport Stream
} network synchronization 0x0015 0x73 time_offset_section
Table Current Last N uimsbf unsigned integer most significant bit first
Version Section CRC reserved for future use 0x0016 to 0x001B 0x74 to 0x7D reserved for future use
Id Next Section Private CRC_32 32 UTC Universal Time, Co-ordinated
Number Number 32 inband signalling 0x001C 0x7E discontinuity_information_section
Extension Indicator Number Data } VBI Vertical Blanking Interval
measurement 0x001D 0x7F selection_information_section
} VPS Video Program System
DIT 0x001E 0x80 to 0xFE user defined
0x001F WSS Wide Screen Signaling
SIT 0xFF reserved
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